I noticed the mention of the MDF being less dense now than it used to be and so giving a 'fluffy' edge, as I call it. Apparently there are different densities of MDF. Kronospan produce the denser grades and so do Medite, as long as you use their dense product. (can't remember the correct name) Medite have a 'Premier' product which is half way between the 'Ultralite' (least dense) and the most dense product and I have found that my suppliers usually stock the Premier grade. I have to ask to get the most dense product. I usually ask for Kronospan now and it is a little easier to finish on the edges.
Johnny B
Johnny B